The fastest strat in this room, the "Indiana Jones", involves swinging from the Rippers to get to the missile pack. However, if you're not consistent at doing that properly, this strat is only slightly slower.

Run through the Speed Booster blocks, jump at the end of the ramp and wall jump up to the missile pack. Then go back down, jump off the ramp up to the Grapple Room door, then you can jump over the Ripper and do a really satisfying mockball under the Mellas.